155855367623 has 4 divisors (see below), whose sum is σ = 156091155528. Its totient is φ = 155619579720.

The previous prime is 155855367611. The next prime is 155855367631. The reversal of 155855367623 is 326763558551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155855367623 - 2¹² = 155855363527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155855367643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117892961 + ... + 117894282.

It is an arithmetic number, because the mean of its divisors is an integer number (39022788882).

Almost surely, 2^155855367623 is an apocalyptic number.

155855367623 is a deficient number, since it is larger than the sum of its proper divisors (235787905).

155855367623 is an equidigital number, since it uses as much as digits as its factorization.

155855367623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235787904.

The product of its digits is 22680000, while the sum is 56.

The spelling of 155855367623 in words is "one hundred fifty-five billion, eight hundred fifty-five million, three hundred sixty-seven thousand, six hundred twenty-three".